Ian Hafkenschiel

Founder

United States1 yr 9 mos experience

Key Highlights

  • Expert in React Native performance and stability.
  • Published author on AI in regulated systems.
  • Founder of multiple tech-focused startups.
Stackforce AI infers this person is a Mobile Systems Architect specializing in healthcare and enterprise applications.

Contact

Skills

Core Skills

Software ArchitectureReact NativePerformance Optimization (software)Application SecurityGraphql

Other Skills

System DesignRegulated Software SystemsTechnical Project LeadershipAmazon Web Services (AWS)Data PipelinesPostgreSQLContinuous Integration and Continuous Delivery (CI/CD)TypeScriptMobile ArchitectureAndroidZustandWeb Content Accessibility Guidelines (WCAG)Microsoft IntuneMobile Application Management (MAM)Storybook

About

I’m an independent Mobile Systems Architect (C2C) focused on stabilizing and extending production mobile platforms. Most of my work involves applications that are already live: real users, uptime expectations, and multi-year lifecycles. I’m typically brought in when reliability, performance, and long-term maintainability matter more than rapid feature churn. I work best in distributed, low-ceremony environments where outcomes matter more than visible busyness. What I’m usually brought in for: • React Native performance and stability (startup time, memory, rendering, crash reduction) • Platform upgrades, SDK migrations, and dependency modernization • Architecture refactoring and long-term maintainability planning • CI/CD hardening and release discipline • Cross-platform delivery across iOS / Android / web / TV My background includes regulated and operationally sensitive systems, where data handling, access control, and reliability are non-negotiable. I recently published the book, "The Auditability Gap: Non-Reproducible Intelligence in Regulated Systems", which explores the challenges of deploying probabilistic AI in environments that require reproducibility and auditability. I operate through Invariant Engineering Group (TigerByte Studio LLC) for structured engagements when a client needs a small embedded team rather than a single engineer. Engagement preferences: • Contract / Corp-to-Corp • Fully remote • Distributed teams • Long-horizon engagements • Outcome-driven delivery I am not interested in commission-only, business ownership, or network marketing opportunities.

Experience

1 yr 9 mos
Total Experience
1 yr 9 mos
Average Tenure
--
Current Experience

Invariant engineering group

Founder & Principal Engineer — Enterprise Mobile & Regulated Systems

Jun 2024Present · 1 yr 11 mos · Remote

  • Operate a small engineering practice focused on enterprise mobile systems and regulated production environments.
  • Engagements include modernization, stabilization, and long-term ownership of React Native platforms in healthcare and enterprise settings.
  • Architect and operator of LexLatam.ai.
System DesignSoftware ArchitectureRegulated Software SystemsTechnical Project LeadershipAmazon Web Services (AWS)Data Pipelines+6

Steris

Senior Mobile Engineer (Contract)

May 2024Feb 2026 · 1 yr 9 mos · Remote

  • Contract Engagement – STERIS (via Elevate Digital)
  • Publicly traded global medical device and sterilization company
  • Led full platform rewrite of STERIS Mobile Handheld Computer (MHC) system from Xamarin MAUI (C#) to scalable React Native architecture, powering sterile processing workflows across hospital environments on Zebra TC52X devices.
  • Defined cross-platform architecture patterns (state management, networking boundaries, device integration layers) to support long-term maintainability
  • Built reusable design system and component library in Storybook aligned with Figma sources
  • Integrated React Native application with Zebra Android scanning hardware for operational clinical workflows
  • Implemented Microsoft Intune SDK and App Protection Policies for secure enterprise mobile device management (MDM)
  • Designed API abstraction layer bridging legacy SOAP/XML backend services into modern React Query / Zustand data flows
  • Delivered within FDA- and HIPAA-regulated enterprise deployment constraints
  • Coordinated across product, backend, QA, security, and compliance stakeholders to influence long-term technical direction
React NativeAndroidZustandWeb Content Accessibility Guidelines (WCAG)TypeScriptMicrosoft Intune+5

Rock rabbit

Senior Mobile App Developer (Contract)

Jan 2024Apr 2024 · 3 mos · Remote

  • Sole senior mobile engineer responsible for production React Native application
  • Stabilized live application by resolving crash sources, performance bottlenecks, and memory issues
  • Implemented image compression and upload optimizations to improve reliability under real-world network conditions
  • Established React Native standards, code review practices, and testing discipline
  • Delivered feature enhancements across rebate estimation and project workflows
  • Led sprint planning and day-to-day engineering execution
React NativeTypeScriptPerformance Optimization (Software)SentryReact NavigationReact Query+3

Presbyterian healthcare services

Senior Mobile Developer (Contract)

Feb 2023Dec 2023 · 10 mos · Remote

  • Contract Engagement – Presbyterian Healthcare Services (via Abundant Health Acquisition)
  • Large regional not-for-profit healthcare system
  • Architected secure authentication flows integrating Okta across in-app and in-browser contexts within a regulated health insurance application
  • Led migration from static content delivery to Sitecore API-driven CMS architecture with caching and fallback strategies
  • Designed offline-first and resilience patterns to improve reliability in real-world member usage scenarios
  • Strengthened production observability by integrating Sentry monitoring and Firebase analytics instrumentation
  • Delivered cross-platform features using React Native, Redux Toolkit, and React Navigation within HIPAA-aligned constraints
React NativeTypeScriptOktaSitecoreRedux ToolkitReact Navigation+5

Ae studio

Technical Product Manager (Consulting)

Feb 2022Mar 2022 · 1 mo · Hybrid

  • Supported early-stage product and engineering alignment on a short-term consulting engagement
  • Translated product requirements into execution-ready technical plans
  • Partnered with design and engineering teams to accelerate initial delivery
Nullstack

Nuro

Contract Team Lead

Jan 2022Feb 2022 · 1 mo · Remote

  • Delivered a React Native proof-of-concept mobile application under aggressive timelines
  • Integrated Square Inventory & Payments, Onfleet, Mapbox, and Auth0 APIs
  • Validated end-to-end mobile workflows without backend infrastructure
  • Mentored non-mobile engineers to contribute effectively to React Native UI development
StorybookReact NavigationReact Native

Buildops

Mobile Team Lead

Oct 2021Dec 2021 · 2 mos · Remote

  • Brought in during a rapid-growth phase to establish mobile architecture and senior execution capacity
  • Led mobile platform direction, delivery planning, and architectural decisions under aggressive timelines
  • Mentored engineers and set standards for code quality, performance, and release reliability
  • Delivered production features in a scaling B2B SaaS environment serving enterprise customers
  • Partnered with product and leadership on prioritization and technical tradeoffs during growth
React NativeStorybookGraphQLPrisma ORMWatermelon DB

Directv

Senior React Native / Web Engineer

May 2021Feb 2023 · 1 yr 9 mos · Remote · Remote

  • Contract Engagement – DIRECTV Stream (via Apex Systems)
  • Led architectural transition from legacy Angular web platform to unified React Native for Web codebase shared with mobile
  • Delivered production web application replacing Angular and onboarding cross-functional teams onto the new architecture
  • Enabled multi-platform packaging across Web and Samsung Smart TV (Tizen) using Webpack-based distribution strategies
  • Instrumented enterprise-scale analytics and audience measurement (Comscore, Adobe Heartbeat, Nielsen, New Relic)
  • Established component-driven development patterns with Storybook adopted across teams
  • Served as React Navigation subject matter expert across mobile and web platforms
React NativeReact Native for WebTypeScriptMobile ArchitectureStorybookWeb Content Accessibility Guidelines (WCAG)+7

Drucker school of management

Entrepreneur in Residence (Seedstages Partnership)

Jan 2020May 2020 · 4 mos · Claremont, California, United States

  • Led cross-disciplinary student teams as part of Seedstages’ academic partnership
  • Supported business model research and mobile prototype development
  • Contributed to scaling internship and training programs during Seedstages growth phase

Seedstages

Co-Founder / CTO

Oct 2019Feb 2021 · 1 yr 4 mos · Claremont, California, United States

  • Co-founded and scaled an internship marketplace platform supporting startup hiring
  • Led and coordinated up to 115 active interns and 250 total contributors across 2020
  • Oversaw engineering, UX, data science, and security teams
  • Built core React Native and Redux architecture and reviewed all production PRs
  • Designed technical training programs and upskilled engineers and PMs

The scale people, inc

Lead Developer (Contract)

Jun 2018Nov 2019 · 1 yr 5 mos · Virginia, United States

  • Led migration of a large e-commerce platform from Magento 1 to Magento 2
  • Delivered full site redesign, data migration, and custom import tooling

Getcryptotax

Founder / CEO

Feb 2018Jan 2020 · 1 yr 11 mos · International

  • Built and operated a web application for cryptocurrency capital-gains tax calculation
  • Designed data pipelines for trade ingestion, normalization, and reporting
  • Product featured in CNBC and Business Insider
  • Led full product lifecycle: engineering, compliance research, and operations

Real identities

Lead Developer (Contract)

Jan 2018May 2020 · 2 yrs 4 mos · Palo Alto, California, United States

  • Built and maintained a web application for controlled-access identity verification
  • Delivered backend functionality using CodeIgniter PHP
  • Served as technical advisor to the CEO on architecture and implementation decisions

Education

Massachusetts Institute of Technology

Certificate

Nov 2025Jan 2026

Georgia Institute of Technology

Master of Science (M.S.) — Computer Science (Graduate Coursework Completed)

Jan 2021Jun 2021

Santa Clara University School of Law

JD — Intellectual Property (Tech)

Jan 2008Jan 2012

Santa Clara University Leavey School of Business

MBA — Entrepreneurship

Jan 2009Jan 2012

Claremont McKenna College

BA

Jan 2004Jan 2008

Phillips Academy at Andover

Jan 2000Jan 2004

UCLA Extension

Linear Algebra (MATH XL 33A) — Mathematics and Computer Science

Jan 2026Mar 2026

University of Nicosia

DFIN-511 Introduction to Digital Currencies — Cryptocurrency

Jan 2017Jan 2017

Universidad de Sevilla

Study Abroad

Jan 2007Jan 2007

UCLA Extension

Mathematics and Computer Science

Jan 2026Mar 2026

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